Jump Festa '18 starts up on December 16, and as always, Square Enix will be on hand for the anime/manga/gaming exposition in Chiba Prefecture. It doesn't appear that there will be any big new announcements there, befitting the expo's slightly lower stature in the industry, but several known properties will appear:

Dissidia Final Fantasy NT

Dragon Quest Builders

Dragon Quest Rivals

Dragon Quest X Online

Dragon Quest of the Stars

Secret of Mana

Dragon Quest: Scan Battlers

Potentially most interesting to Westerners like us would be the news of Dragon Quest Builders, as this will be the debut of the Switch version, and any new video or announcements for Dissidia NT. There may also be a new trailer for Secret of Mana arriving.